After the JDG-00X Devil Gundam escapes from Tokyo, Domon Kasshu travels to the Guyana Highlands to train and improve his martial arts skills to fight his former master. Unbeknownst to him, he's followed by Master Asia and the Devil Gundam. When Master Asia reveals himself, he comes with a massive army consisting of Death Army, Death Birdie and Death Navy mobile suits. The Death Birdie is basically an airborne variant of the Death Army. It can fly high for overhead attacks with its claw arm beam cannons, and it can also release the Death Army suit docked inside it for ground combat.